/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once

#include <inttypes.h>
#include <net/if.h>
#include <stdbool.h>

// #include "cgroup-util.h"
#include "macro.h"

assert_cc(sizeof(pid_t) == sizeof(int32_t));
#define PID_PRI PRIi32
#define PID_FMT "%" PID_PRI

assert_cc(sizeof(uid_t) == sizeof(uint32_t));
#define UID_FMT "%" PRIu32

assert_cc(sizeof(gid_t) == sizeof(uint32_t));
#define GID_FMT "%" PRIu32

/* #if SIZEOF_TIME_T == 8 */
#  define PRI_TIME PRIi64
/* #elif SIZEOF_TIME_T == 4 */
/* #  define PRI_TIME "li" */
/* #else */
/* #  error Unknown time_t size */
/* #endif */

/* #if defined __x86_64__ && defined __ILP32__ */
#  define PRI_TIMEX PRIi64
/* #else */
/* #  define PRI_TIMEX "li" */
/* #endif */

/* #if SIZEOF_RLIM_T == 8 */
#  define RLIM_FMT "%" PRIu64
/* #elif SIZEOF_RLIM_T == 4 */
/* #  define RLIM_FMT "%" PRIu32 */
/* #else */
/* #  error Unknown rlim_t size */
/* #endif */

/* #if SIZEOF_DEV_T == 8 */
#  define DEV_FMT "%" PRIu64
/* #elif SIZEOF_DEV_T == 4 */
/* #  define DEV_FMT "%" PRIu32 */
/* #else */
/* #  error Unknown dev_t size */
/* #endif */

/* #if SIZEOF_INO_T == 8 */
#  define INO_FMT "%" PRIu64
/* #elif SIZEOF_INO_T == 4 */
/* #  define INO_FMT "%" PRIu32 */
/* #else */
/* #  error Unknown ino_t size */
/* #endif */

typedef enum {
        FORMAT_IFNAME_IFINDEX              = 1 << 0,
        FORMAT_IFNAME_IFINDEX_WITH_PERCENT = (1 << 1) | FORMAT_IFNAME_IFINDEX,
} FormatIfnameFlag;

// char *format_ifname_full(int ifindex, char buf[static IF_NAMESIZE + 1], FormatIfnameFlag flag);
// static inline char *format_ifname(int ifindex, char buf[static IF_NAMESIZE + 1]) {
//         return format_ifname_full(ifindex, buf, 0);
// }

typedef enum {
        FORMAT_BYTES_USE_IEC     = 1 << 0,
        FORMAT_BYTES_BELOW_POINT = 1 << 1,
        FORMAT_BYTES_TRAILING_B  = 1 << 2,
} FormatBytesFlag;

#define FORMAT_BYTES_MAX 16U

char *format_bytes_full(char *buf, size_t l, uint64_t t, FormatBytesFlag flag) _warn_unused_result_;

_warn_unused_result_
static inline char *format_bytes(char *buf, size_t l, uint64_t t) {
        return format_bytes_full(buf, l, t, FORMAT_BYTES_USE_IEC | FORMAT_BYTES_BELOW_POINT | FORMAT_BYTES_TRAILING_B);
}

/* Note: the lifetime of the compound literal is the immediately surrounding block,
 * see C11 §6.5.2.5, and
 * https://stackoverflow.com/questions/34880638/compound-literal-lifetime-and-if-blocks */
#define FORMAT_BYTES(t) format_bytes((char[FORMAT_BYTES_MAX]){}, FORMAT_BYTES_MAX, t)
#define FORMAT_BYTES_FULL(t, flag) format_bytes_full((char[FORMAT_BYTES_MAX]){}, FORMAT_BYTES_MAX, t, flag)

#define FORMAT_BYTES_CGROUP_PROTECTION(t) (t == CGROUP_LIMIT_MAX ? "infinity" : FORMAT_BYTES(t))
